html,body {
  position: relative;
  height: 100%;
  margin: 0;
  padding: 0;
}
.target, .target2 {
  position: absolute;
  background: #faa;
  box-sizing: border-box;
}
.target.selected {
  border: 4px solid #f55;
}
.button {
  position: absolute;
  left: 500px;
  top: 50px;
  background: #eee;
  padding: 15px 40px;
  display: inline-block;
  border-radius: 5px;
  font-weight: bold;
  color: #444;
}
.button.selected {
  color: #fff;
  background: #66d;
}
